SAP ECC to S/4HANA Lifecycle Support

SAP ECC maintenance ends 2027. Allari holds operational ownership across every stage of the ECC to S/4HANA lifecycle — Optimize through Post-Go-Live.

SAP ECC mainstream maintenance ends end-of-2027

SAP ECC 6.0 mainstream maintenance ends on 31 December 2027. Extended maintenance is available through 2030 at a premium. The window to plan, execute, or postpone an S/4HANA transition is closing, and the operational risk inside that window — sustaining the ECC environment while delivering the migration in parallel — is the single largest capacity drain we see on enterprise IT teams in 2026.

Three lifecycle positions and what each requires

Stay on ECC through 2027 (or beyond on extended maintenance)

Operational ownership of the ECC environment, full ticket and Basis coverage, security hardening, integration monitoring, and audit-ready change governance. Allari runs this layer so your core team can run the migration evaluation in parallel without the day-to-day support work consuming the calendar.

Migrate to S/4HANA with an active SI engagement

Concurrent operations on ECC during the SI delivery, custom-code remediation against the S/4HANA simplification list, Fiori activation governance, and a documented cutover plan with operational continuity baked in. Allari holds the legacy stable so the SI can focus on the new build.

Run post-go-live on S/4HANA

Steady-state operations on S/4HANA after the SI demobilizes — quarterly innovation pack adoption, regression testing, HANA database administration, and the full Run layer on the new platform. This is the engagement shape that protects the value the migration was supposed to deliver.

Frequently asked questions

What if we are not going to make the 2027 deadline?

Most enterprise programs that have not started today will not. The realistic path is extended maintenance through 2030 with a parallel migration program. Allari runs the ECC environment through that window so the migration team is not also the support team.

Do you work alongside our chosen Systems Integrator?

Yes. We commonly hold operational ownership of the legacy ECC environment while a separate SI delivers the S/4HANA conversion. The Build-Run Separation is designed to be partner-agnostic.

Book a working session · SAP support service · Read the 2027 capacity brief

This page is part of allari.com. The full interactive experience is available at https://allari.com/sap-ecc-lifecycle.

About Allari. Allari holds the run layer of enterprise ERP — JD Edwards, SAP, Oracle Fusion, NetSuite. Founded 1999. 27 years of continuous operation under original ownership. 100+ enterprise customers. Self-funded. No outside capital. We measure every ticket through OpenBook® and bring the support run-rate down quarter by quarter through Build-Run Separation.

What Allari runs

  • Run layer. Production support, environment work, ticket triage, root-cause discipline, integration operations, vendor coordination.
  • What customers keep. Build, governance, modernization roadmaps, and next-platform programs.

Verified outcomes (sourced)

  • HellermannTyton — 20-year partnership, 30-month longitudinal study, 463-ticket sample, 1.84-hour median resolution.
  • W.L. Gore — 14-year operating partnership since 2012, 64,959 lifetime tickets in our PSA, 200,134 hours delivered.
  • BrightView — largest customer in our portfolio by ticket volume.

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